Why is my package doc too long on pkg.go.dev?

[Amit Lavon]

In my repo overview page, I would like the doc column to only show the first sentence. Here specifically "Package fasta handles fasta I/O". See screenshots below.

How can I achieve that?

Is there documentation regarding how package docs get rendered on pkg.go.dev?

Is it possible to run pkg.go.dev locally to test my doc changes (like we could with godoc)?

Amit